Dynamo-electric machine.



W. E. PUWELL.

DYNAMIC IELEGTRIG MACHINE.

APPLICATION FILED APR. 1, 1907 Patentei Jan. 28, 1913;

ctunmutatin suppoi zco l? described my as applied to direct current 1110- it not limited to such us equally }')})lll(fll)l to any l he 1 Wing a commutator or n'iotei', direct e2" otliicalions 3e shown ll 1) inventic 1 ll .i V l i. In a clynaino-elcctiic liinatiou of n '1 fieltl j V. pole shoes, :11 i and conunutating n ueln een adjacent m by being clamp l. .hei windings of ac latter.

:2. in a elynainoclectric machine, til e c hinati *n of in in field polopieces pole shoes, Winlings For said olecommutaling Win l' iga solely sonic. tween adjacent main field.

no, the comi having pole-pi, 'y supoo pole cc a oy )Ole shoes and cores for said n0; clamped between the windings of the la commutatin g Winclin 1 3. l clynamo-elecii'ic machine, the comhination of main polemi nie shoes, windings for said l .uxiliary wini'lh'igs supported acenr': pole-pieces by he clan; he pole shoes and Wiiiitli of t" and cores within SRlCl Wii'idin l thereby a in dynamoelectric machine,the comhination of a plurality of main lieii olencces, a yoke therefor, a plural i i ntanng pole-pieces, and

Y ry -l-NIBCPS out of aca eai poles are attached, commutating pole-pieceseach in a plane With the main. pole-pieces, and auxiliary pole-pieces out of the plane the main pole-piece and each associated with one of the commutating pole-pieces.

8. in a dynamo-electric machine, the c0mbination of field polepicces distributed around the armature, a yoke to which said pole-pieces are attached, conmiutating polepieccs each in a plane with the main polepieccs, and auxiliary pole-pieces out of the plane of the main pole-pieces, each comi'uutating pole-piece being magnetically associated with a plurality of auxiliary polo pieces.

'7. In a rlynan'ioelect-ric machine, the combination of an {iFlllill'Ul'G having cn ltu1'ns, a conunutator, a plurality of main field polepie :cs, a yoke therefor, a commutating pole; piece in the plane of the main pOlGflliQCGS, and an auxiliary pole piece magnetically connected to toe ci'unn'iulating pole piece and in the plane oi the eucl turns at one end. of the armature Winding.

8. lo l '-/IlfilYlO-Ql:(ji7ll0 machine, the combination of an armature having QIMl-tlll'llI-l, a (TOII'lll'lllt'zitOl, a plurality of main polo pieces, a yoke connecting them. a. plurality of comu'iulating pole-pieces in the plane of the main mic-pieces, coils on said commw iating pole-picccs5 and a pin 'al'ity cl auxiliary pole-pieces magnetically continuous with the individual mmmutal'ing polir-pieces and located in proximity to the end lutns the armature Wiui'ling, the commulating mle-g ucccs being each independent 01' all lhe 1min pole-pieccs and of all other commuhit ng pole-iieces. l,

in a (lynamoclectric machine, the comtion of an armature having end turns, commutator, main p0le-picces, coils thereon, a yoke connecting .aicl main pole-pieces, commutating pole-"pieces each magnetically inilepcniilent ct all the main pole-pieces and of all other. cou'imutating ,oolepieces, coils on said commutating pole-pieces, and auxiliai'y pole-pieces a1 'anged in the planes of the end turns at the two ends of the armaturt e winding, one auxiliary pole-piece in each of saicl two planes being magnetically connected with each commutating polepiece.

.ln testimony whereof I affix my signature, in the presence of two Witnesses. 

